Cnidaria Collection (page 42)

Stalked jellyfish eating a shrimp. Close-up of the tentacled head end of a stalked jellyfish (staromedusa, Lucernaria quadricornis) retracting after having engulfed a skeleton shrimp (Caprella sp)

Brittle star eating coral. Northern basket star (Gorgonocephalus arcticus, centre, yellow) wrapped around a soft coral (Gersemia fruticosa, white)

Hydrozoan colony. Close-up of the tentacled feeding structures of a hydrozoan (Tubularia larynx) colony. Hydrozoa are a type of cnidarian and are related to corals and sea anemones

Lesser cylinder anemone (Cerianthus lloydi). Cylinder, or tube, anemones are anthozoans that look very similar to sea anemones, but belong to a different subclass

Atlantic wolffish resting next to a plumose sea anemone. The Atlantic wolffish (Anarhichas lupus) inhabits the rocky bottoms of the north-eastern and north-western Atlantic Ocean coasts

Soft coral growing on a reef. Unlike other corals, soft corals do not produce calcium carbonate skeletons and don t form reefs. They thrive in nutrient-rich waters with less light intensity

Nudibranch eating hydrozoa
Nudibranch (Flabellina verrucosa) eating hydrozoa (Eudendrium sp.). Nudibranchs are shell-less marine molluscs that live in seas around the world

Fish eggs. Close-up of fish eggs (white spheres) on a hydrozoan colony (plant-like) with skeleton shrimps (translucent). Hydrozoa are a type of cnidarian that are related to corals and sea anemones

Pillar coral. Pillar coral (Dendrogyra cylindrus) is a hard coral whose colonies can reach up to three metres in height. The coral is unusual in that the polyps emerge to feed in the day

Lions mane jellyfish (Cyanea capillata). Lions mane jellyfish are the largest known species of jellyfish. They can reach over 2 metres across with tentacles of around 30 metres long

Hydrozoan colony and amphipods. Amphipod (Stenothoe marina) crustaceans sheltering amongst the tentacled feeding structures of a hydrozoan (Tubularia larynx) colony

Hydrozoan (Tubularia indivisa). Hydrozoa are a type of cnidarian and are related to corals and sea anemones

Moon jellyfish tentacles. Close-up of the tentacles of an ephyra medusa of the cnidarian Aurelia aurita. Medusae are the free-swimming larval stage of cnidarians and are commonly known as jellyfish

Predators feeding on a hydroid colony
Predators feeding on a hydrozoa colony. Colony of Tubularia larynx hydrozoa that has been destroyed by nudibranchs (Coryphella sp)

Sea urchin and anemone. Northern red anemone (Urticina felina, upper right) and pale sea urchin (Strongylocentrotus pallidus, lower left) on rocks

Sponges on coral reef. Barrel sponges (Xestopongia sp.) and leather corals growing on a reef. Photographed off Misool, West Papua, Indonesia

Tropical corals. Black corals (white, family Antipathidae) and sea whips (order Gorgonacea) growing in tropical waters. Photographed off Misool, West Papua, Indonesia

Damselfish on a reef. School of damselfish (family Pomacentridae) by a gorgonian sea fan (pink) on a coral reef. Photographed off Misool, West Papua, Indonesia

Minute filefish camouflaged amongst coral
Minute filefish camouflaged amongst the feeding tentacles of a coral polyps. Minute filefish (Rudarius minutus) are capable of changing the colour

Snappers. School of snapper (family Lutjanidae) fish swimming between boulders covered in black coral. Photographed in Triton Bay, West Papua, Indonesia

Juvenile golden damselfish (Amblyglyphidodon aureus, centre) by a gorgonian sea fan (left) on a coral reef. This species of damselfish inhabits reefs in the tropical Indo-Pacific region

Fairy basslets over a reef. Fairy basslets (family Grammatidae) swimming over hard coral and feather stars. Photographed off Komodo National Park, Komodo, Indonesia

Tropical reef, Indonesia
Tropical reef. Diverse community of soft corals, Tubastrea sp. hard corals, hydroids and feather stars growing on a boulder. Photographed in Triton Bay, West Papua, Indonesia

Pregnant pygmy seahorse. Pregnant male pygmy seahorse (Hippocampus bargibanti) camouflaged against sea fan coral. Like all seahorses, pygmy seahorses have an unusal form of reproduction

Pontohi pygmy seahorse amongst hydroid colony. Pontohi pygmy seahorses (Hippocampus pontohi) have only recently been described (as of 2010)

Snappers over a reef. School of snapper (family Lutjanidae) fish swimming over coral. Photographed in Bunaken Marine Park, Sulawesi, Indonesia

Fusiliers over a reef. School of fusilier (family Caesionidae) fish swimming over coral. Photographed in Triton Bay, West Papua, Indonesia

Triplefin hiding amongst corals. Triplefin (family Tripterygiidae) fish sheltering in a small Tubastrea Sp. coral colony (dark) surrounded by Xenia sp. corals (light)

Whip coral shrimp on whip coral
Whip coral shrimp (order Decapoda) on whip coral (order Gorgonacea). These small shrimp adopt the colouration of their host whip coral (sea fan)

Triplefin hiding in coral. Triplefin (family Tripterygiidae, upper left) fish sheltering in a hole in large hard coral (family Faviidae)

Coral goby hiding inside hard coral. Coral gobies (Gobiodon sp.) live their entire lives hidden amongst the branches of a hard coral colony

Ghost goby on soft coral
Ghost goby (Pleurosicya sp.) on soft coral. The goby family (Gobiidae) is one of the largest families of fish and includes some of the smallest vertebrates in the world

Denises pygmy seahorse camouflaged against sea fan coral. Denises pygmy seahorses (Hippocampus denise) are one of the smallest pygmy seahorses and are named after photographer Denise Tackett

Hydra anatomy and development, artwork
Hydra anatomy and development, historical artwork. Illustration from An anatomical-evolutionary investigation of Hydra (1872) by Nicolaus Kleinenberg

Clown Anemonefish, Amphiprion percula, Alam Batu, Bali, Indonesia

Coralliomorph Andaman Sea, Myanmar DWD00617
AUS-1891 Coralliomorph Andaman Sea, Myanmar Discosoma rhodostoma Dr David Wachenfeld / Auscape / ardea.com Auscape Please note that prints are for personal display purposes only

Moon jellyfish (Ulmariidae) swarming close to the surface, enjoying the early morning sun Marsa Alam, Red Sea
Joe Graham / SplashdownDirect

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"Cnidaria: A Fascinating World of Underwater Wonders" Discover the mesmerizing realm of Cnidaria, a diverse group of marine creatures that includes some truly extraordinary species. From the fierce Caiman crocodilus crocodilus to the enigmatic Anilius scytale, these animals captivate with their unique characteristics and captivating beauty. Venturing into the depths, we encounter the ethereal Deep sea jellyfish (Periphylla periphylla) in Trondheimsfjord, Norway. Its translucent body glows like an otherworldly beacon amidst the darkness, leaving us in awe of nature's wonders. Moving on to warmer waters, we come across the Portuguese man o war (Physalia physalis) in Tenerife, Canary Islands. With its vibrant hues and long tentacles trailing behind it like delicate ribbons, this creature is both alluring and dangerous. In a harmonious partnership between species lies a Western clownfish (Amphiprion oceallaris) seeking refuge within a Magnificent sea anemone (Heteractis magnifica). Their symbiotic relationship showcases nature's ability to create mutually beneficial connections. Witnessing an aggregation of Golden jellyfish (Mastigias sp), we are transported to another world altogether. These graceful creatures move as one through pristine waters, creating a spectacle that leaves us breathless with wonder. Exploring even further south brings us face-to-face with an Unidentified large jellyfish in brash ice at Cierva Cove, Antarctica. This mysterious creature thrives in extreme conditions and reminds us of life's resilience even in harsh environments. The striking Physalia pelagica or Portugese-man-of-war floats gracefully through tropical waters—an embodiment of grace mixed with danger. Its venomous tentacles serve as protection while its vibrant colors catch our eye against azure seas. Stepping back into history reveals Coral Gallery c.